B27.9 - Infectious mononucleosis, unspecified
- Applicable to Infectious mononucleosis, unspecified
- The 2025 edition of ICD10-CM B27.9 became effective on October 1, 2024.
- This is the American ICD10-CM version of B27.9 - other international versions of ICD10 B27.9 may differ.
- B27.9 is a Non-Billable / Non-Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- B27.9 Code should not be used for billing or reimbursement purposes as there are multiple ICD-10 CM codes below it that contain a greater level of detail.
- B27.9 - Infectious mononucleosis, unspecified
- B27.9 - Infectious mononucleosis, unspecified
- B27.90 - Infectious mononucleosis, unspecified without complication
- B27.91 - Infectious mononucleosis, unspecified with polyneuropathy
- B27.92 - Infectious mononucleosis, unspecified with meningitis
- B27.99 - Infectious mononucleosis, unspecified with other complication
Non-Billable/Non-Specific Code
The following codes above B27.9 contain annotation back-references that may be applicable to B27.9:
- Chapter: A00-B99 - Certain infectious and parasitic diseases
- Section: B25-B34 - Other viral diseases
- Category: B27 - Infectious mononucleosis
Browse other similar CM codes:
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
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